Metabonomics to Investigate Effects of Healthy Diets on Blood Pressure: the OmniHeart Study

Urinary Metabolic Phenotyping of Diet-cardiovascular Disease Risk Associations: the OmniHeart Feeding Trial

To compare the urinary metabolomes on individuals undergone three different healthy diets--a carbohydrate-rich diet, a protein-rich diet, or a diet rich in unsaturated fat.

BACKGROUND:

This study based on the OmniHeart dietary intervention study, a randomized, three period cross-over feeding study that compared the effects on blood pressure and plasma lipids of three DASH-like diets: a carbohydrate-rich (CARB) diet pattern, a rich in protein (PROT) and a rich in unsaturated (MUFA) fat, predominantly monounsaturated fat diet (see full details of OmniHeart dietary intervention https://clinicaltrials.gov/ct2/show/record/NCT00051350).

This metabonomic study aims to evaluate the feasibility of identifying individuals showing variation in clinical response to three different healthy diets, with the purpose of reducing cardiovascular disease (CVD) risk, using proton nuclear magnetic resonance (NMR) based metabolic phenotyping approach.

Inclusion Criteria:

• with pre-hypertension (systolic BP of 120 to 139 mmHg and/or diastolic BP of 80 to 89 mmHg) or stage 1 hypertension (systolic BP of 140 to 159 mm Hg and/or diastolic BP of 90 to 99 mm Hg) and without diabetes or prior CVD

Exclusion Criteria:

• CVD or diabetes